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HORSESHOE NAIL MACHINE.

No. 530,596. Patented Dec. 11., 1894,

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7 Richard, Glazmb erb,

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' R. C. LAMBERT.

HORSE SHOE NAIL MACHINE.

No. 530,596. Patented Dec. 1 1, w

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Attorney.

| PEYER' co. PNOTO-LITKO., smnmcm n c NITED STATES PATENT O FICE.

RICHARD rnmnnnn or HOLBRQOK, MASSACHUSETTS, ASSIGNOR or ONE- HALF TOMIOHA B. FAXON, or SAME PLACE.

'HORSESHQE-NAIL MACHINE.

SPECIFICATION forming atof Letters Patent No. 530,596, dated December 11,1894.

" Applicationfiled June1B,1894 SerislNo. 1 (Nomad-l To all whom/thaw}; concern:

Be it known that I, RICHARD O. LAMBERT, of Holbrook, in thecounty of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Horseshoe- Nail Machines, of which the following, taken My invention relates to machines for mak ing horse shoe nails and it consists in certain novel featuresof construction, arrangement and combination of partswhich will be readily understood byreference to the description of the accompanying drawings and to the claims hereto appended and in which my invention is clearly pointed out.

Figure 1 of the drawings is a side elevation of a machine illustrating my invention. Fig. 2 is a sectional plan of the same the cutting plane being on line 1,- 1, on Fig. 1. Fig. 3 is a vertical transverse section on line 2, 2, on Fig.1 with the two side connecting rods shown in elevation. Figalis a partial sectional elevation, the cutting plane being on line 3, 3 on Fig. 2. Fig. 5 is a plan of onesetof-the ings C, O in which is mounted the shaft D having firmly secured thereon the driving pulley E and eccentric cams F and F as shown. l

The frame 0 is slotted vertically so as to divide it, for a large part of its length, into tw0- parts with suliicient space between said. parts for the passage of the three armed levers G and G fulcrumed upon acommon non-revoluble fulcrum pin a and connected at their upper ends by the toggle links G and G and having adjustably setin their lower ends the swaging dies b and b respectively.

The table A is provided upon its upper side 1 with two boxes 0 and c in which is mounted in a fixed position the fulcrum pin (1 upon which are mounted the two levers H and H connected together at their lower ends by the toggle links H and H which are connected together and to the lower end of the two side rods I and I, the upper ends of which are connectedto each of the toggle links Gr and G3 by a common pivot pin 6 as shown.

The upper ends of the levers H and H have adj ustably set therein the swaging dies f and f" respectively said levers H and H having their upper arms slotted for the passage of the dies b and 6' carried by the levers G and G, and thelower. arms of the levers G and G are slotted for the passage of the set screwsf and)" for adjusting the diesf and f all as shown in Fig. 4. r

i J is a three armed lever mounted upon a fulcrum pin gset in the frame 0 with the innerend of two of its arms pivoted to the side rods I and I at or near the middle of their lengths while the other arm proj ects. through the slotof said frame 0 toward the right of Fig. 1 and has formedtherein a large, slot or oblong opening it to receive the eccentric cam F which acts thereon to vibrate said lever and move the side rods 1. and I up'and down and thus straighten and break the toggles G2 G and "H H as the shaft D is revolved.

The frame 0 has formed upon its upper edge suitable housings and boxes inwhich are mounted the feed rolls and t" .the roll '1; havingconnected thereto the ratchet wheel 6 which is engaged bythe pawl j adjustably pivoted to the lever J and pressed into engagement with the teeth of the ratchet wheel Why the spring k asshown in Fig. 2 audio dotted lines in Fig.1. 1

The table A has formed upon or secured to toggle links K and K and each having adjustably set in its upperarm two swaging dies n and n constructed and arranged to co-operate'with thedies b, b',and f, f, to

swage the bar of iron into the shape of a horse shoe nail. The dies nn have secured to their upper sides the chisel shaped cutters 0, 0, which co-operate to sever the nail from the rod at the same time that the lower set of dies are completing the shaping of the nail.

The inner ends of the toggle linksK and K are connected together and to the short coupling link L by the pivot pin 19, the lower end of said link L being pivoted at p to the lower arm of the elbow lever M mounted upon the fulcrum pin q mounted in cars formed upon or secured to the leg B at the right hand end of Fig. 1. The lever M is moved about its fulcrum in one direction to straighten the toggle K K by the action of the cam F upon the upright arm of said lever, and in the opposite direction to break the toggle by the spring '7' shown onlyin dotted lines in Fig. 1.

The fulcrum pins a, d, and m are made preferably with square journals or shanks s, s, to rest in correspondingly shaped hearings to prevent their being revolved, with two cylindrical sections 8, s, to receive the levers to be carried thereby and with a central collar s of larger diameter than the sections 8 s and has formed therein the hole 25 which extends diametrically through said collar in a vertical direction for the passage of the heated rod and in the case of the lower fulcrum pin on for the passage of the finished nail.

The feed roll 2" is adjustable toward or from the roll t by means of the set-screws t to adapt it to slight variations in the size of the rods used, and the feed rolls 2' and t" have circumferential grooves formed therein adapted to receive the edges of the rod or bar of iron from which the nails are to be formed as shown in Figs. 2 and 3.

The rod of iron from which the nails are to be formed is heated to the desired temperature in any suitable manner which may be done by aheating device, electric or otherwise upon the machine or detached therefrom as may be preferred, and suitable means not shown will be employed to keep the dies cool or at least prevent their becoming in j u riousl y heated. The inner or operating faces of the several dies are so shaped that When closed or at the extreme of their inward movement there will be a space between the lower set of dies exactly corresponding in length and cross section to the finished nail and between the upper set of dies there will be a space of similar shape but somewhat larger than the finished nail.

The eccentric cams F and F should be so placed upon the shaft D that the toggle K K will be nearly straightened before the toggles G G3 and H H begin to straighten, or so that the dies at and n will have completed their inward movement before the dies b b and ff come in contact with the rod at which time the dies b b and ff will be supdistance from the fulcrum of said lever J, to

vary the stroke of saidpawl, and thereby increase or diminish the length of rod fed at each revolution of the shaft D.

' While I have shown and described only two set'sof dies, each set composed of two pairs each, it is obvious that a greater number of sets of dies may be used without afiecting the principles of my invention, and therefore I do not wish to be limited to the use of two sets of dies. It is also obvious that the dies must-be made of different sizes according to the size of the nails to be made, and changeable at the will of the operator.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a nail forging machine the combination of a pair of oppositely vibrating levers mounted upon a common axis; aswaging die mounted in each of said levers,-below said axis of motion, with their working ends toward and near each other; a second pair of oppositely vibrating levers mounted upon a common axis and movable in aplane at right angles to the plane of movement of said first mentioned levers; a pair of dies carried by said second pair of levers at the ends thereof above their axis of motion, said dies being located in the same horizontal plane as, and arranged to co-operate with, said first mentioned pair of dies to swage the same section of the nail rod. I

2. In a nail forging machine, thecombination of a pair of intermittently revolving feed rolls for feeding the nail rod to the dies; a non revoluble fulcrum pin arranged directly beneath the space between thefeed rolls, and provided with avertical opening through the same for the passage of the nail-rod; a pair of die operating levers mounted'upon said fulcrum-pin; a dieadjustably set in one end of each of said levers, and co-operating with each other to swage opposite sides of the nail rod; a pair of toggle links connecting th'e'other ends of said levers; andmeans having-provision for alternately straightening and breaking said toggle, and thus cause said dies to act upon the nail-rod to change its shape.

3. The combination of the table Aprovided with thebo'xes c c, l and l; the arched and slotted frame 0 provided with the boxes 0',

O; the feed rolls 1' and t; the shaft D; the

cams F and F; the fixed fulcrum pins a, d, and m; the three pairs of levers G G, H H and K K mounted respectively on said pins a, d, and m; the toggles G G H 11 and K K; the dies b b, ff n and n carriedby said levers and arranged relative to each other as set forth; the cutting 0E knives 0, 0; the side rods or links I and I; the three armed lever J; the elbow lever M; and the link L, all con- 5 strueted, arranged and operating substantially as described.

In testimony whereof I have signed my name to this specification, in the presence 0f twosnbscribing witnesses, -on this 15th day of June, A. D. 1894.

RICHARD O. LAMBERT.

Witnesses:

N. C. LOMBARD, HENRY DUNN. 

